Wrench



Feb. 4, 1930.`r

A. B. sElLHEl'Mg-:R

WRENCH Filel April 28, 1928 2 Sheets-Sheet 1 Feb. 4, 1930. A. AB.sElLHl-:IMER 1,745,560

v WRENCH Filed April 28. 1928 2 Sheets-Sheet 2 ob' 5 the provision of awrench as characterize Patented Feb. 4, 1930 .ALLEN B. SEILHEIIIER, 0FTIFFIN, OHIO WRENCH Application mea April as, 192s.4 serial No. 273,574.

Myinvention relates to improvements in wrenches for use in replacing orremoving threaded nuts from bolts in highly restricte locations,-and hasfor its primary ect which is especially for applying the nuts and lockwashers employed in connection with the transmission bands of planetarygear transmissions, such as are used in some classes of motor vehicles.

when the nut A further object -is to provide a wrenchhavin means forholding a nut seated there# in and manually or automaticall operatedmeans for releasing said nut hol in means vhas -been well starte on itsbolt.

More specilically, itis an object of the invention to provide in awrench, as characterized, novel means for holding a nut (or a nut andlock washer) against loss while starting the same upon a threaded shank.y

A still further ob] ect of the invention is to provide in a 'gear drivenwrench a nut-loss preventing 'device and latch means therefor adapted toengage and lock thegear train when the nut-loss preventing device is inin'- operative position.

I The invention-also resides incertain novell .features of construction,combination, and mode of ,operation of the various arts to behereinafter described and claime bei-ng1 .had to the accompanying'drawings whic illustrate what now appears to be a preferred embodimentof the invention. It

1s to lie-understood, however, that the invention is susceptible ofconsiderable change and modification over the embodiment shown anddescribed without departing from the spirit and scope of the subjectmatter claimed hereinafter. p v In the drawings wherein the samereference characters have been used tov designate the same partsthroughout,

Figure 1 is ar bottom plan view of a wrench incorporating my invention;

Figure .2 is a perspective view; A

Figure' 3 is a section on the line v3"-3v of vFigurel; Figurefl is agroup perspective'view showreference ingv the nut and washer removed andtheir confining slide in inoperative position; A

Figure 5 is a cross section on the line 5-'5 of F1gure 4; l Y

Figure 6 is a section on the line 6-6 of 55 Fi ure 4, and y igure 7 is aperspective view showing the nreleasing -latch for the slide doReferring specificallyto the rawings the body of the wrench com ,rises apair of elon`- gated'metal plate mem rs 1, 2 which are connected inspacedr relationship by two orsv more rivets 3 at longitudinally spacedmedial points. A handle 4 is secured at one end of the body 1, 2 byrivets or other fastening 05 elements 5, as shown.

Between plates 1, 2 is disposed the gear train comprlsing the relativellarge'thumb actuated gear 6 adjacent hand e 4 and which is journalled onone of the rivets 3; adja- 70 cent gears 7, 8 journalled Yin platerecesses as shown; a fourth ear 9 journalled on one f the rivets 3 and wich latter gear 9 meshes with the peripheral teeth 10 of the nut re-xceiving socket member 11. It is proper to mention at this point that1plates 1, 2 adjacent their ends remote from andle'4l are bent laterallyon a bias, as in-v dicated by dotted line`12 in Figure 2, to define ahead l, 2a. In other words the head, 80 formed b laterally bent ends l,2* of the bod 1,2, 'es in a plane disposed at an oblique ang e to theplane of `body 1, 2 whether the.

latter'be viewed edgewise or facewise.` The t relative arrangement ofhead'1,2 and body 85 1, 2, thus, enables the wrench to be used=or rathermanipulated from a point above and laterally of the bolt,-as forinstance from the central part'of the openin of a transmission gearcase,-it being un erstood that l the bolt end is off to one side ofsaid-case.`

Plate 1 has its head portion 1a thickened, as indiclated in Figure 3, itbeing noted that head prtion' '1* is provided with a hole 1b which actsas a bearing-to receive the enlarged circular upper portion 11* of thesocket 11.l The socket vmember 11 is supported upon vthe head portion 2o f plate 2, said head ortion 2 having a hole 2b concentric with t ehole 1b and which is adapted to receive the reduced lower sleeve portion11b. of the socket I member 11 below the gear teeth 10. It is to beunderstood, of course, that the socket member 11 will be located inplace with the other members of the gear train before the plates 1, 2are secured together by the rivets 3.

The 4socket member 11 has a hexagonal re- A cess for the reception ofnut 15 and the bottom of the socket member 11 is provided with a bolt'passage hole, as indicated.l

The plate 1 has its outer face provided with longitudinal uides 17 forguiding the locking slide 18 W lose bifurcated end 18a engages thewasher 19 on either side of the bolt hole for confining said washer andthe subjacent nut in place against loss.

disengage The slide 18 has an ear 20 at its rear end which is aperturedfor engagement by a spring 21the other end of which is secured in anapertured ear 22 of a locking dog 23 which is pivoted to plate 1, as at24.l The dog 23 is adapted to engage in notch 18b of slide 18 to holdthe same against retractionf Spring 21 has a dual function in that ittends to cause dog 23 to bear against the edge of slide 18 and furtherin that'it tends to maintain slide 18 in operative position to hold thenut-15 and washer 19 in placein socket member 11.

` The other end of dog 23 has a laterally bent U-shaped 'portion 25which, when the dog is from notch 18h, is adapted to be actuated betweenthe plates 1, 2 to engage betweenv teeth of gear 8 to lock the trainagainst -movement until such a time as the slide is moved back tooperative position. It is understood that' the engagement of the lugkend of dog 23 with the edge of slide 18 will holdportion- 25 ingear-locking position. When operating this wrench within a planetary'transmission case it is practically impossible to tell when the nut iswell started on its bolt. Therefore,-as a Asafeguard to preventmanipulation of slide for disengagement of the wrench from the nut untilthe latter is well started on. the bolt,-I provide end 33 in theposition of Figure 3. The op.- Y posite end of wire lever 31 islaterally bent as at 34 so that when part 33 is in a position in thepath of the bolt 38 as in.` Fi ure 3 the part 34 will lie ,beneath'thenotche forward edge 25 of the gear`locking dog part 25 toprevent'depression of dog 25 to free it frona the notch 18*A of slide18. However, when the end of the bolt engages the end 33 of wire wrenchwill doubtless be readily understood and appreciated by those skilledinthe art. The wrench is relatively inexpensive in construction and maybe operated with one hand leaving the other free to perform .otherduties. For instance when operating upon transmission bands the freehand can be used to control the pedal and shaftofthe particular thermoreit will be plain that the washer 19 can be slid onto the bolt, thewrench applied to the endof the bolt with the nut therein and the slide18v drawn back,-the release of 'nsV the slide gathering vor engagingthefwasher and seating it against the nut. The thickened portion 1a ofplate 1,-that is to say at the head of the wrench,-provides ample Vdepthto house the washer 19 in contact with the inner endof the nut.

Inasmuch as it is possible to lock the gear.

-train by means of dog -23 the wrench can be used as an ordinary rigidYnon-geared wrench, for. instancewhen it is desired to .tighten a nutconsiderably or vloosen one which has become very tight. Furthermore awrench as characterized herein will elfectually prevent a nut or a.washer from drop ing into the transmission with the incident'lbss oftime 'in retrieving. Having thus described my invention, what I claim asnew and desire to lsecure by Letters Patent is:

1.`A wrench ofthe classv described comprising a body, a nut receivingsocket member, said body having a confining bearing in which said nutreceiving socket member is journalled, said socket member havingperipheral gear teeth, (gearing carried by said body and having a rivingconnection with the gear teeth of said socket member, a slide membercarried by said body and having one los end adapted to engage a nut insaid socket member to hold the same in place, a latching dog pivoted-tosaid body and having. a lug at one end, said slide having a notch with awhich said lug 4is adapted to be engaged to hold said slide in operativeposition, and a spring secured to said dog to hold it in engagement"withsaid s lide, andv said spring being also attachedl to said slide to holdlthe same yieldably in operativeposition, and the other endlof said doghaving a portion actuated to engage and lock said gear'train when thedog is swung to disengage its lug `from said notch.i y l 2. l Ina wrench.of the class' described h-aving ja 'socket head, said socket headbeing* adapted to receive aq 'nut from. one 'end'of 80 drum upon whichwork is being done. Fur- `said socket, the other end of said sockethaving a hole, movable nut-confinin means a's- -so'ciated with` saidhead, a latch or said last named means, and bolt-operatedlatch-releasing means alined with said sock-et hole.

3. v In a wrench having a nutengaging portion and a nut confining meansassociated therewith, the combination of a bolt-operated releasing meansfor said confining means.

4. The combination set forth vin claim 1,- and a lever carried by saidbody and having laterally `bent end portions, one of said end portions,normally engaging said dog to prevent actuation thereof to release saidslide,

and the other of said end portions lying adjacent said head and in thepath of the bolt to be operated thereby when the nut has reached apredetermined point thereon so as to swing said lever to release saiddog from the first-mentioned laterally bent end portion.

5. Awrench of the class described comprising a body provided witha'nut-receiving socket, a locking slide carried by said body and havinga portion adapted to overlie said socket member to confine a nuttherein, latching means for holding said slide in operative position,said latching means comprisin a dog pivoted to said body and having aug, said slide having a notch adapted to receive said lug, and ayieldable connection between when the nut has assumed a said locking dogand said slide whereby to cause the dog to bear against the slide andtonormally retain the slide in a position to confine a nut in said socketmember.

6. A wrench of the class described com'- prising a body having a nutreceiving socket portion, said socket ort-ion lyingin a plane obliquelyand lateral y disposed with respect to the face and side edge planes ofsaid body',

means for confining a nut in said socket member and movable to and fromoperatlve positiony means for latching said confining means in nutholding position, and yielding means connected to said confining andlatching means and tending to hold both of the same in their operativepositions.

7. A wrench of the class described comprising a body provided with anut-receiving socket, a locking slide carried by said body and having aportion adapted to overlie said socket member to confine a nut therein,latching means for holding said slide in operative position, andbolt-operated releasing means for said slide-latching means and.operable position on the bolt.

8. In a gea-red wrench having a rotatable I i nut-supporting head andgeared driving means therefor,-a movable member for holding the nut inthe head, latching means for said nut holding member, and gear lockingmeans carried by said latching means and operable to locklthe gearsagainst turning when the nut holding member is released.`

predetermined 9. The combination set forth in claim 8;

